/Engine/Plugins/Runtime/MassGameplay/Source/MassSpawner/Public/MassSpawnerSubsystem.h
Spawns entities of the kind described by the given EntityTemplate. The spawned entities are fully initialized meaning the EntityTemplate.InitializationPipeline gets run for all spawned entities.
true if spawning was successful, false otherwise. In case of failure see logs for more details.
void SpawnEntities ( const [FMassEntityTemplate](API\Plugins\MassSpawner\FMassEntityTemplate) & EntityTemplate, const uint32 NumberToSpawn, [TArray](API\Runtime\Core\Containers\TArray)< [FMassEntityHandle](API\Plugins\MassEntity\FMassEntityHandle) > & OutEntities )